All her hard work during the season accumulated as the World Championship in Rio de Janeiro, at the same course she had raced two years prior. Fox was set to win an Olympic silver medal in the K1 but a time penalty for touching a gate saw her take bronze.

She exercised her demons in Rio, showing her experience and grace on the water in the K1 final to beat British paddler Mallory Franklin. 

Unfortunately, she couldn't enjoy her K1 win. 

The program had changed previous World Championships, where they would perform one event per day but this year Fox raced the final of the K1 on Saturday morning then had to do the C1 semi-finals in the afternoon. 

"So I won the title for K1 in the morning and that was like a massive deal to me, and I couldn't really appreciate it," she said.

"I had to get ready to race in C1 that afternoon, I had drug test between and it was sort of like I had to just move on very quickly and that kind of sucked because I just achieved this awesome thing and I couldn't enjoy it," Fox said.

So when she crossed the line knowing she had won the C1 gold, all her emotions poured out.

"It was just unbelievable. I couldn't believe that I'd managed to back it up. I managed to win another world title and I'd managed to win the double again, all that emotion came out," she said.

"It was a weird feeling to just let it all out when I've been holding it in."

It is the second time the dual Olympian had won both the C1 and K1 titles, with the first being in 2014. The win also meant that she had gone through the season undefeated in the C1.

It was also a family affair with Fox beating her father, Richard, who won five individual titles, as she became the most successful individual paddler in history before leapfrogging her mother, Myriam Jersusalmi, to become the most successful female paddler in history.